We tested four different biscuits, each with a different thickness. Working carefully and fairly, the children dunked each biscuit into warm water one dip at a time, counting how many dunks it survived before breaking. We made sure to keep all other factors the same so that it was a fair test.

The class recorded their results, compared the performance of each biscuit, and discussed what the findings might tell us about biscuit strength and structure. The children showed great teamwork, accurate measuring, and excellent scientific thinking.

It was a fun (and slightly messy!) investigation that helped us practise making predictions, collecting data, and drawing conclusions like real scientists.